Home / 11,310.92-15,602.65-7,111.88

Finding the Fourth Proportional to 11,310.92, 15,602.65 and 7,111.88

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Solution

The fourth proportional to 11,310.92, 15,602.65 and 7,111.88 is: 9,810.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.92 : 15,602.65 = 7,111.88 : x
  2. Step 2: Convert to fraction form
    11,310.92/15,602.65 = 7,111.88/x
  3. Step 3: Cross multiply
    11,310.92x = 15,602.65 × 7,111.88
  4. Step 4: Simplify right side
    11,310.92x = 110,964,078.69
  5. Step 5: Solve for x
    x = 110,964,078.69/11,310.92
  6. Step 6: Final answer
    x = 9,810.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.